47745997918 has 32 divisors (see below), whose sum is σ = 74150575200. Its totient is φ = 23046575616.

The previous prime is 47745997907. The next prime is 47745998029. The reversal of 47745997918 is 81979954774.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1995168 + ... + 2018956.

It is an arithmetic number, because the mean of its divisors is an integer number (2317205475).

Almost surely, 2^47745997918 is an apocalyptic number.

47745997918 is a deficient number, since it is larger than the sum of its proper divisors (26404577282).

47745997918 is a wasteful number, since it uses less digits than its factorization.

47745997918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24156.

The product of its digits is 160030080, while the sum is 70.

The spelling of 47745997918 in words is "forty-seven billion, seven hundred forty-five million, nine hundred ninety-seven thousand, nine hundred eighteen".